From: Wei Liu <wei.liu2@citrix.com>
To: Anthony PERARD <anthony.perard@citrix.com>
Cc: xen-devel@lists.xenproject.org,
Ian Jackson <ian.jackson@eu.citrix.com>,
Wei Liu <wei.liu2@citrix.com>
Subject: Re: [Xen-devel] [PATCH] libxc: elf_kernel loader: Remove check for shstrtab
Date: Wed, 15 May 2019 13:02:35 +0100 [thread overview]
Message-ID: <20190515120235.GQ2798@zion.uk.xensource.com> (raw)
Message-ID: <20190515120235.cIxCmAxETpEdDVExTtYcwPAPZQY3NLzPZnUDOX3FCbk@z> (raw)
In-Reply-To: <20190515114015.25492-1-anthony.perard@citrix.com>
On Wed, May 15, 2019 at 12:40:15PM +0100, Anthony PERARD wrote:
> This was probably useful to load ELF Note, but now ELF notes
> "should live in a PT_NOTE segment" (elfnote.h).
>
> With notes living in segment, there are no need for sections, so there
> is nothing to be stored in the shstrtab.
>
> This patch would allow to write a simpler ELF header for an OVMF blob
> (which isn't an ELF) and allow it to be loaded as a PVH kernel. The
> header only needs to declare two program segments:
> - one to tell an ELF loader where to put the blob,
> - one for a Xen ELFNOTE.
>
> The ELFNOTE is to comply to the pvh design which wants the
> XEN_ELFNOTE_PHYS32_ENTRY to declare a blob as compaptible with the PVH
> boot ABI.
>
> Note that without the ELFNOTE, libxc will load an ELF but with
> the plain ELF loader, which doesn't check for shstrtab.
>
> Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
Acked-by: Wei Liu <wei.liu2@citrix.com>
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next prev parent reply other threads:[~2019-05-15 12:03 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-15 11:40 [PATCH] libxc: elf_kernel loader: Remove check for shstrtab Anthony PERARD
2019-05-15 11:40 ` [Xen-devel] " Anthony PERARD
2019-05-15 12:02 ` Wei Liu [this message]
2019-05-15 12:02 ` Wei Liu
2019-05-15 12:07 ` Andrew Cooper
2019-05-15 12:07 ` [Xen-devel] " Andrew Cooper
2019-05-15 12:09 ` Wei Liu
2019-05-15 12:09 ` [Xen-devel] " Wei Liu
2019-05-15 12:55 ` Anthony PERARD
2019-05-15 12:55 ` [Xen-devel] " Anthony PERARD
2019-05-16 13:23 ` Wei Liu
2019-05-16 13:23 ` [Xen-devel] " Wei Liu
2019-05-16 13:38 ` Andrew Cooper
2019-05-16 13:38 ` [Xen-devel] " Andrew Cooper
2019-05-17 11:38 ` [PATCH v2] " Anthony PERARD
2019-05-17 11:38 ` [Xen-devel] " Anthony PERARD
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